1 /* bcopy -- copy memory regions of arbitary length 2 3 @deftypefn Supplemental void bcopy (char *@var{in}, char *@var{out}, int @var{length}) 4 5 Copies @var{length} bytes from memory region @var{in} to region 6 @var{out}. The use of @code{bcopy} is deprecated in new programs. 7 8 @end deftypefn 9 10 */ 11 12 #include <stddef.h> 13 14 void 15 bcopy (const void *src, void *dest, size_t len) 16 { 17 if (dest < src) 18 { 19 const char *firsts = (const char *) src; 20 char *firstd = (char *) dest; 21 while (len--) 22 *firstd++ = *firsts++; 23 } 24 else 25 { 26 const char *lasts = (const char *)src + (len-1); 27 char *lastd = (char *)dest + (len-1); 28 while (len--) 29 *lastd-- = *lasts--; 30 } 31 } 32
